20067705

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:523

約数の個数: 72

約数和(自身を含む): 42681600

約数和(自身を除く): 22613895

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 49, 57, 63, 95, 105, 133, 147, 171, 245, 285, 315, 399, 441, 479, 665, 735, 855, 931, 1197, 1437, 1995, 2205, 2395, 2793, 3353, 4311, 4655, 5985, 7185, 8379, 9101, 10059, 13965, 16765, 21555, 23471, 27303, 30177, 41895, 45505, 50295, 63707, 70413, 81909, 117355, 136515, 150885, 191121, 211239, 318535, 352065, 409545, 445949, 573363, 955605, 1056195, 1337847, 2229745, 2866815, 4013541, 6689235, 20067705]

約数ペア:

[(1, 20067705), (3, 6689235), (5, 4013541), (7, 2866815), (9, 2229745), (15, 1337847), (19, 1056195), (21, 955605), (35, 573363), (45, 445949), (49, 409545), (57, 352065), (63, 318535), (95, 211239), (105, 191121), (133, 150885), (147, 136515), (171, 117355), (245, 81909), (285, 70413), (315, 63707), (399, 50295), (441, 45505), (479, 41895), (665, 30177), (735, 27303), (855, 23471), (931, 21555), (1197, 16765), (1437, 13965), (1995, 10059), (2205, 9101), (2395, 8379), (2793, 7185), (3353, 5985), (4311, 4655)]